dmaengine: xilinx: Add empty device_config function
Various DMA users call the dmaengine_slave_config() and expect it to succeed, but that can only succeed if .device_config is implemented. Add empty device_config function rather than patching all the places which use dmaengine_slave_config(). Signed-off-by: Marek Vasut <marex@denx.de> Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: Kedareswara rao Appana <appana.durga.rao@xilinx.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210804195140.61396-1-marex@denx.deSigned-off-by: Vinod Koul <vkoul@kernel.org>
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